Compressed Backups via DVD help

Alright, so i've been running some backups on my wii and some of the backups that i have are some sort of compressed PAL format. I have no problem running regular PAL backups, but the compressed ones are the issue. (as in the "fluff" is removed in the ISO) When I burn them they burn correctly but i get a blue error screen in wii backup loader and a wii shutdown in neogamma. If i can only run these in a USB loader i'll go out and buy the 16gb flash drive, but i'd prefer running them off of DVD (it makes it easier for my girlfriend to play the games)

please advise

p.s. i'm running OS X and i've used Disk utility to burn all the games (working ones and non-working ones) but i have no problem running windows, i'm already dual-booting.